The 6308 DDU C3 E NSK with Bearing is a 40mm inner diameter, 90mm outer diameter, and 23mm width double-sealed deep groove radial ball bearing made with bearing steel, manufactured by NSK. This bearing is designed for applications which require high accuracy and maximum running speed. It can carry radial and axial loads, provides low energy consumption, and features low noise and vibration. The double-seal offers superior protection against dust, moisture, and other types of debris.